Lighting and air impelling device



May 21, 1940. w. A. BROWN LIGHTING AND AIR IMPELLING DEVICE Filed J une 13, 1939 5 Sheets-Sheet 1 #M ATTORN EY R O T N E V m 21,1940, w. A. BRCWN 2,201,153

LIGHTING AND AIR IMPELLING DEVICE Filed June 15, 1939 s Sheets-Sheet 2 INVENTOR W '4 /GM ATTORNEY INVENTOR 5 Sheets-Sheet 3 W. A. BROWN LIGHTING AND AIR IMPELLING DEVICE Filed June 15, 1939 May 21, 1940.

WM Q. 64am BY 7WX ATTORNEY May 21, 1940, w. A. BROWN LIGHTING AND AIR IMPELLING DEVICE Filed June 13, 1939 5 Sheets-Sheet 4 ATTORNEY y 1940. w. A. BROWN LIGHTING AND AIR IMPELLING DEVICE 5 Sheets-Sheet 5 Filed June 13, 1939 INVENTOR I. .llm.

ATTORNEY Patented May 21, 1940 UNITED STATES PATENT OFFICE LIGHTING AND AIR. IMPELLING DEVICE William A. Brown, Philadelphia, Pa.

Application June 13, 1939, Serial No. 278,823

20 Claims.

In the commercial development of a device combining lighting means and air impelling means, wherein the air impelling means is in the path of light rays issuing from the lighting means;

the problem of flicker at low impeller speeds is serious and it has not been, heretofore, solved.

In my prior patents, 2,087,239 and 2,087,240, I have disclosed novel means for reducing flicker, such as the use of a source of light on oppositesides of the air impelling means, but since an opaque impeller was used satisfactoryresults could only be obtained under certain restricted operating conditions, especially at low impeller speeds.

The other and equally serious problem of loss of illumination, where an opaque air impeller is in the path of light rays issuing from the source of light and said impeller is at a standstill or revolving slowly, can only be solved satisfactorily by the use of an air impeller having light transmitting air impelling blades.

It is therefore the primary objects of this invention to overcome the foregoing defects in prior devices of this character, and to devise a construction wherein an air impeller having light transmitting air impelling blades is in the path of light rays issuing from a source of light, whereby the desired volume of illuminationis obtained and flicker is eliminated.

The character of the supporting means employed on the devices disclosed herein, may vary widely in practice and may be in the form of a floor, table, wall or ceiling support.

With the above and other objects in view, as will hereinafter clearly appear, my invention comprehends a'novel lighting and, air impelling device.

Other novel features of construction and advantage will hereinafter more clearly appear in the detailed description and the appended claims.

For the purpose of illustrating the invention,

I have shown in the accompanying drawings typical embodiments of it, which in practice, will give satisfactory and reliable results. It is, however, to be understood that the various instrumentalities of which my invention consists canbe variously arranged and organized, and my invention is not limited to the exact arrangement and organization of these instrumentalities as herein set forth.

5o Figurel is a sectional elevation of a lighting and air impelling device, embodying'my invention. I v

Figure 2 is a section on line 2-2 of Figure 1. Figure 3 is a modified form of Figure 1,in side elevation and partly broken away.

Figure 4 is another modified form of Figure 1, in sectional elevation and partly broken away. Figure 5 is a top plan view of an air impeller having reinforcing means.

Figure 6 is a sectional elevation of another em- 5 bodiment of my invention.

Figure '7 is a section on line 1-1 of Figure 6. Figure.8 is a side elevation, partly broken away, of a modified form of Figure '6.

Figure 9 is a sectional elevation, partly broken 10 away, of another modified form of Figure 6.

Figure 10 is a top plan view of another type of air impeller having reinforcing means.

Figure 11 is a side elevation, partly in section, of another embodiment of my invention.

- Figure 12 is a bottom plan view of Figure 11;

Figure 13 is a sectional elevation of another embodiment of my invention.

Figure 14 is a top plan view, partly broken away, of Figure 13. v 20 Figure 15 is a sectional elevation of another embodiment of my invention.

Figure 16 is a bottom plan view. of Figure 15.

Similar numerals indicate corresponding parts.

Referring to the drawings: 25

Referring to Figures 1 to 4 inclusive, I designates a conventional motor which drives an air impeller 2 having a desired number of light transmitting air impelling blades 3. 4 is an impeller hub fitted to the drive shaft of the motor I and 30 5 is an impeller spider to which the air impelling blades 3 are attached by any suitable means, such as the rivets l0. '6 is a casing surrounding the motor I, which is preferably open at its top and bottom to dissipate motor heat. In many 35 instances, this casing 6 maybe dispensed with. 1 is a junction box, which is also vented in any desired manner to dissipate the heat generated by a variable motor speed control rheostat 8, through which the motor I operates and which 40 has an insulated knob ll. While the casing 6 and the junction box I are shown as separate parts rigidly held together by the screw 9, it is to be understood that they may be combined in one piece if desired. The motor studs l2 and 46 the nuts 13 act to hold the motor I in position on the supports I4 of the guard 29, and the screws IS with the nuts 16 act to hold the casing 6 in position on said supports l4,,as well as contributing to the support of the junction box 50 l in its assembled position on said casing 6.

A light bulb I1 is positioned in a socket l 8 which is attached to a tubing ill. The nuts 20 and 2| hold the lower threaded end of the tubing I9 to the casing 6, while the upper section is supported by a bent metal strip 22 through which it passes. The screw 23 and the nut 24 hold the metal strip 22 to another and similar metal strip 25 that is welded to metal rings 26 and 21 of a guard 29, thereby preventing any movement of thetubing l9 after assembly. It is to be understood that the conventional light bulb may be replaced by any suitable lighting means, and the conventional socket I8 may be dispensed with for any suitable means for receiving said lightins means.

The light transmitting member 30, adjacent to the light bulb I1, is preferably open ended to prevent an accumulation of heat around the bulb l1, and it may or may not have reflecting-diffusing quanlities. A flanged double wall ring 3| that supports the light transmitting member 30 is welded to a cross member 32 and has adjustable screws 33 which may be moved in or out in seating or removing the member 30 into or out of a ring 3|. A reflector 34', which is preferably opaque and made of metal, acts to prevent the radiant heat of the bulb H from reaching the motor I and more particularly the adjacent portions of the air impeller 2, when high wattage light bulbs I! or their equivalent are used. In many instances, however, this reflector of insulator 34 may be dispensed with. The cross member 32 is removably but rigidly mounted on the supports M by means of the screws 35 and the nuts 36, and seats on the wire ring 26, which is welded to the inside surface of the supports l4. The reflector 34 is attached to the cross member 32 by the screw 31 and a nut 38.

A guard 29, comprising the supports l 4 to which a series of spaced wire rings such as 26, 21 and 28, are permanently attached, acts to prevent damage to the propeller 2 and more particularly to the light transmitting blades 3, as well as supporting a shade 39 or its equivalent. In practice, this guard will vary in shape and construction, and, in certain instances, may even be made as a light transmitting segmental or integral cylinder extending from the bottom of the light transmitting air impelling means 3 to the top of the ring 40, as disclosed in Figure 3. In some cases the spaced wire rings, such as 26, 21 and 28, of Figure 1 would be replaced by the transparent or translucent rings of Figure 3. It is to be understood that the shade 39 may be made of any suitable material and in any desired shapeor form, and, in certain instanc'es'in practice, will be dispensed with.

As I prefer to have the-entire assembly of motor, junction box, light transmitting air impelling means, light bulb, light transmitting member, and their adjuncts, adjustable from a position where the air impeller 2 is horizontal to one where it is perpendicular, I have shown a swivel mounting having a yoke 4|, within which is a fitted ear 42 to permit of a rigid adjustment of the entire assembly in any desired position by means of a conventional thumbscrew 44, wing nut 45 and washer 49 arrangement, as fully shown in Figure 2. The yoke 4| is a part of a standard having a floor or table base, which are not shown, it being understood, however, that ways and means of mounting or supporting the assembled structurewill vary with diiferent applications.

The manner of properly connecting the wires from the socket l8 and the motor to the main lead wires 43 and to the rheostat 8 that controls the speed of the motor and to the switch 46 that controls the light bulb socket I1, is well known to those skilled in the art. A detailed explanation of the procedure to be followed, is therefore unnecessary.

Figure 2 shows more clearly the overlapping feature of the light transmitting air impelling blades 3, which is preferred, as it has been proved that such a construction does contribute to the elimination of noise at high and low impeller speeds. As will be seen, the light transmitting air impelling blades 3 are rigidly held in position on the impeller spider 5 by means of the rivets ID, or their equivalent. I prefer to use a light transmitting material in manufacturing the impeller hub 4 and the spider 5. It is to be understood, however, that in many cases in prac tice these parts will be made of metal or any other suitable material having either opaqueor light transmitting characteristics, since their position with respect to the lighting means I1 and the motor is such that they will have very little or no bearing on the elimination of flicker while revolving, or a reduction of illumination while stationary.

Figure 2 also shows the relation of the thumbscrew 44, the washer 49 and the wing nut 45, to

the yoke 4|, and to the ear 42 of the junction box I. The location of the switch 46 that controls the lighting means as well as the junction box cover 41, which has a slot 48, are more clearly seen in this view. In many instances I prefer to duplicate the slot 48 in the bottom of the junction box I, to accelerate the escape of the heat thrown ofi by the rheostat 8.

Figure 3 is the same as Figure 1. in all respects except that I have dispensed with the light transmitting member 30, the cross member 32,- and the reflector 34. In certain cases in practice I prefer to replace the spaced wire rings, such as 26 and 21 of Figure 1, that are attached to the upright portions of the supports l4, with a light transmitting member 50 to surround the light transmitting air impelling blades 3 and extending upward to enclose the lighting means II. In certain instances, I also prefer to replace the wire rings such as 28 of Figure 1, that are attached to the bottom portions of the supports l4, with lighttransmitting rings 5|, 52 and 53, also attached to the supports M by any suitable method, such as the screws 54. As will be noted, by proper spacing of these rings, when made the correct length, it 'will be possible to divide the air flow created by the air impelling blades 3 to obtain a more efficient result.

The use ofthe rings 5|, 52 and 53, properly designed for the purpose and having correct translucent qualities, will also provide desirable diffused illumination should I prefer to make the light transmitting air impelling blades 3 of a transparent material, to permit full passage through. the air impelling blades 3 of the light rays from the lighting means Should I prefer to make the air impelling blades 3 of translucent material, colored a cobalt blue for example, to obtain eflicient daylight lighting directly through the blades, I would then prefer to make the rings 5|, 52 and 53 of a transparent material.

In other words the light transmitting air impelling blades 3 and the light transmitting rings 5|, 52 and 53 may be co-operatively designed to provide efiicient diffused or glareless lighting of the proper intensity, with or without the use of the member 30 adjacent to the lighting means II as seen in Figure 1, and without in any way affecting the usefulness of said rings in securing a more even distribution of air flow created by the light transmitting air impelling blades 8'.

The further use of an integral or segmental guard 58 around the air impelling blades 8 and 1 the bulb I1 in place of the spaced rings seen in Figure 1-, and having light transmitting qualities will permit me to dispense with the shade -88, seen in Figure 1, if desired, and still obtain diffused glareless illumination of a high quality by simply making said guard of a bluish translucent material. In most instances in practice, however, I should prefer to make said guard 58 either transparent or of a whitish tint and surround it with a suitable shade38.

It is to be understood that the guard 58 and the rings 52 and'58 may be supported in any desirable manner other than by the uprights I4. It is to be understood also that the guard 58 and the rings 5|, 52 and 58 of Figure 3, either together or singly, may be dispensed with for the wire ring construction seen in Figure 1 or its equivalent for protecting or enclosing the air impelling blades 8.

Figure 4 is the sameas Figure 1 in all respects except that I have dispensed with the ring 8| and attach the light transmitting member 55 directly to the cross member 82 by means of the same screw 81 and nut 88 which hold the reflector or insulator 84 in rigid assembly on the cross member 82. In this construction, it will be noted that the light transmitting member 55, which may or may not have reflecting-diffusing qualities, is

closed at the bottom, and it may or may nothave a series of openings 56, preferably round, to provide a continuous upward passage of air around the lighting means I1. It will also be evident that in. many instances in practice the light transmitting member 55 or its equivalent may be dispensed with and only the reflector or insulator 84 used.

In Figure 5 I disclose a conventional type of impeller 51 without overlapping air impelling would be unsuitable. It is of course evident that reinforcing ribs may also be incorporated in the detachable type of light transmitting air impelling blades 8 shown in Figures 1, 2 and 3, if desired. It will also be evident that said ribs, under certain conditions, may be opaque and of metal,

' without departing from the scope of this invention. Since 'most air impellers are statically balanced and many are dynamically balanced as well to insure q'uiet eflicient operation, it is essential that the light transmitting air impelling blades 8 and 58 of Figures 1 and 5 be constructed ,to resist permanent deformation under hard usage and to maintain surface conformation indefinitely and while the use of reinforcing means such as the ribs 88, 8| and 82 is not essential, in certain instances reinforcing means will be necessary.

Referring to Figures 6 to 9 inclusive, 88 is a conventional motor, which may or may not be concealed in the casing 58, and which drives the light transmitting air impelling means 85 of the impeller 84 which have the same characteristics already described for the air impelling blades 8 of Figure 1, notwithstandinga difference in shape and position. 88 is the impeller hub, and 81 is the spider to which the air impelling means 85 are attached by any suitable means, such as the rivets 1|. The junction box 88 is the preferred means of concealing a rheostat 18 for controlling the speed of the motor 88 through the use of an insulated knob 12, which is attached to said rheostat. In many instances in practice, the rheostat 18, or its equivalent, will be dispensed with, or it may be mounted at a point distant from the motor 88. The motor studs 18 and the nuts 14 for rigidly attaching the motor 53 in position on the supports 15 are the same as described for Figure 1," as are the. screws 15 and the nuts 11 that hold the casing 58 in assembly on thesup ports 15, as well as contributing to the support of the junction box 58.

In the embodiment of my invention seen in Figures 6 and 1, I employ the lighting bulbs 18 and 18 or their equivalent, which are mounted on the opposite side of. the light transmitting a'ir impelling means 55 to that of the light bulb 82 or its equivalent. In this construction, light rays from either lighting means may pass through the light transmitting air impelling means 55 as de sired, or-both sources of light may be turned on simultaneously to increase the intensity of the As will be noted, the light bulbs 18 and 18, are

mounted in thestandard sockets 88 and 8i, lo-

cated below the light'transmitting air impelling means 85 and the light bulb 82 is mounted in a similar socket 88 above the air impelling means The tubing 84, the nut 85 that positions said tubing on the motor casing 88, the bent metal strip 88 that rigidly holds it in assembly on the wire guard 88 by means of the metal strip 88 and the screw 81 with its nut 88, are the same as shown and described for Figure 1. The top wire ring 88, the middle ring 8i and the bottom ring 82', which are preferably welded to the four supports 15 in helping form the wire guard 88 which surrounds andprotects the light transmitting air impelling means 85, are also the same as described for Figure 1. v

The member 84, which is preferably light 1 transmitting, but which may be opaque in.cer-

tain instances, and which may or, may not have reflecting-diffusing qualities, is also preferably formed with a series of small holes 85 to help prevent an accumulation of heat around the lighting means 82. If the quick dissipation of this heat is unnecessary, these holes 85 can be dispensed with. The cross member, that supports the member 84 is permanently held in position on the uprights 15 by means of the screws 88 and the nuts 88. The reflector or insulator 81, which is preferably of metal and similar to 84 of Figure 1, contributes with the screw I88 and the nut I8I inh'olding the member 84 in its assembled position on the cross member 88, but may be dispe sed with if. desired. It will also be evident in his embodiment of my invention that the member 84 may be dispensed with and only illumination in either direction or both directions.

I88 of the wire guard 88, is preferably instantly I can and i9 and the switch I that controls the bulb 82, may be replaced by other suitable controls. It will also be understood that these switches 1M and M5 or their equivalent may be located at a point distant from the assembly. It is to be further understood that the junction box 63 or its:

equivalent may be located at a point away from the assembly, and in some cases dispensed with entirely. The main lead wire I08 is the same as described for Figure 1.,

Figure '7 shows more clearly the shape and position of the light transmitting air impelling means 65, as well as the light bulbs I8, and 19. The position of. the supports 15 in relation to the motor casing 68, andthe screws 16' with their nuts TI that hold said casing 68 in rigid assembly on said supports I5 are also clearly shown. As will be seen, the screws I6 adjacent to the junction box 69 pass through the ears H4 and act to maintain said junction boxin permanent assembly on the motor casing 68 and the main supports 55. The thumbscrew I 09, wing nut IIIl,washer H3, yoke I96, boss I01, forming a pivotal mounting and supporting construction for the assembled unit, are the same as described for Figure 1. It is to be understood however that any suitable mounting or support may be employed. The

junction box cover HI has the vent H2, and

there is a similar vent in the bottom of the junction box, which cannot be seen,;to permit rapid dissipation of any heatgenerated by the rheostat it, as already described for Figure 1.

Figure 8 is another embodiment of my invention wherein I dispense with the lighting means 82 or its equivalent as well as the member 95 of Figures 6 and 7, and their adjuncts located above the light transmitting air impelling means 65. In all other respects, this embodiment is a duplication of the embodiment shown in Figures 6 and 7.

Figure 9 is another embodiment of my invention wherein I replace the member 93 of Figure 6 with an open ended member I 55 such as is shown in Figure 1. The flanged double wall ring Ill? and the adjustable screws H3 are the same as described for Figure 1. The reflector or insulator lid, which is the same as already described for Figures 1 and6 and which is preferably made of metal, and the ring iii are welded to the cross member I23. In all other respects this embodiment is a duplication of that shown in Figures 6 and 7. As already described for Figure 6, either the member litter the reflector MS may be dispensed with, if desired.

Figure 10 shows an integral air impeller wherein the light transmitting air impelling means I it and the hub in are molded as a unit, with or without the reinforcing ribs I2! and I22. In this embodiment, it is to be understood that the hub lid may be of metal in many instances, and the reinforcing "ribs, which have already been described for Figure 5, may include special metal wire should extra resistance to hard usage be reuired. It will be understood that small diameter wire of great strength and having good refleeting qualities can be advantageously used to reinforce the light transmitting air impelling means has light transmitting qualities. For example, the air impelling blades 3 of Figures 1 to 4 and 55 of Figures 6 to 9 inclusive, are shown as a plurality of light transmitting blades, which could however be constructed as a single element, if desired, to create the proper flow of air.

Referring to Figures 11 and 12, I26 is an air impeller having light transmitting air impelling means i2'I, detachably mounted on the spider I28 by .any suitable means such as the rivets 829, said spider being a part of the hub I30 which is attached to the motor l3I. Inmany instances in practice, I prefer to have the motor i3l reversible to provide air circulation in either an upward or downward direction, as desired, withbut having to employ adjustable air impelling means. To reduce vibration to a minimum, it is advisable to employ a cushioned support for the motor I3I, comprising the metal washers I32, the rubber doughnuts I33 and I35, the cross member I34 and the nuts I36 which are attached to the motor assembly studs I31. The main supporting nut I38 and the secondary co-operating nut I39 are screwed on to the threaded end of the tube I40 and act to hold the entire assembly in rigid position on said tube I40, which leads to any desired construction suitable for a ceiling, wall, table or floor support.

The main assembly cross member M I which is preferably U shaped and drilled and threaded to provide a firm fit on the tube Hill, has the flanged members I32 and MT welded to it to receive and conceal the wires N3 of the vertically and horizontally disposed quick detachable standard fluorescent lighting lamps Md and I5I. As will be seen, the top and bottom hollow members I49 and H3 are held in rigid assembly on the main supporting member Mi by means of the top screws M5 and M5 and the bottom screws I 54 and ibt. The conventional socket M8 for the vertically disposed lamps I lt are properly fitted to the top and bottom hollow members M9 and W3, and similar sockets I52 for the horizontally disposed lamps ibl are fitted to opposite sides of the bottom hollow member i533. The standard auxiliaries 556 required for each fluorescent lamp M6 to permit satisfactory operation of said lamps on ordinary electrical wiring and currents are concealed and mounted in the top hollow member M9, and similar auxiliaries 555 for the horizontally disposed lamps 55E mounted in the bottom hollow member ibii, aswill be more clearly understood by referring to Figwe 12.

The parallel threaded round bars its act to maintain the spaced rings itll, ISI and I52 in proper assembly. The adjustable nuts I59 serve to hold said bars its in rigid assembly on the main supporting member Ni, and also permit of easy removal of said bars H58 and the rings I50, ill and I62. The principal advantages obtained by the use of the rings ltd, Nil and IE2 have already been described for Figure 3. In a ceiling device, however, there is the additional advantage of being able to conceal the motor wt and its adjuncts to a considerable extent by the proper design and location of these rings which are preferably light transmitting but which may be opaque if desired.

The main lead wires itl, comprising the wires M3 from the lighting means and the wires l5I from the motor, are connected to suitable switches and controls, preferably located away from the assembled unit, and since the method of are concealed and properly connecting these wires to obtain the defl:

alent.

sired result is well known to those skilled in the art, it is deemed unnecessary to give a detailed explanation of the procedure to be followed.

In order to materially increase thepulling or suction action of the device, I have enclosed the motor I3I and the light transmitting blades I21 and their adjunts within the light transmitting panels I63. 'These panels, when assembled, as will be more clearly understood from Figure 12, to form an open ended closure, also act to conceal the motor I3I and the blades I21 to achieve a very attractive assembly without aifecting in any way the illuminating or air flow efiiciency of the device. It will be noted, however, that the panels. I63 are easily removed by loosening the detachable bottom supports I65, should it be desired to operate the motor I3I and the blades I21 without said panels I63. The top panel supports I64 are similar to those at the bottom but are permanently attached to the top hollow member I49, by any suitable means.

Figure 12, clearly shows the preferred method of assembling the three sections of the top and bottom hollow members I49 and I53 into a hexagonal shaped unit by welding, soldering or otherwise joining the sections together at the points I66. The position of the blades I21 with respect to the bottom horizontally disposed fluorescent lamps II is also clearly shown in this figure as wellas the location'of the threaded round bars I58 with respect to the spaced light transmitting rings I68, I 6i and I62. The reinforcing ribs I68 of the light transmitting blades I21 correspond to similar ribs already described for Figures '5 and 10, and may or may not be used, as desired.

In many instances in practice, either the vertically disposed lamps I44 or the horizontally disposed lamps I5I or their equivalent, may be dispensed with, if desired.

Referring to Figures 13 and 14, "I is an air impeller having detachable light transmitting air impelling means I12, which are held in assembly on the spider I13 by the rivets I14 or their equiv- It is to be understood, however, that the air' impelling means I12, the spider I13 and the hub I may be formed integral as a single unit of structure, as already'described for-Figures 5 and 10. The motor I16 which drives the impeller I" is preferably of the reversible typ as already described forli'igures 11 'and 12. The cushioned motor support comprising the metal washers I11,

the rubber doughnuts I18, the cross member I19, the motor studs 188, the stud nuts I8I,- the main supporting nut I82, the secondary supporting nut I83 and the tube I84 are similar to those-shown in Figures 11 and 12.

the tube I84 by means of the rings I98 and I92,

which are slidable on the tube I84 and held in rigid assembly by the screws I9I and I93, may have two co-operative but distinct functions. It can be made to have high light reflecting qualities as well as acting as an air deflector, and it can be dispensed with entirely," if desired. As

an air deflector the member I89, when positioned in proximity to the motor, would serve to prevent the airdriven upwar'd'by the air impeller I'1I from mixi ng with ceiling air, which has certain advantages during hot weather. In cold weather, when. maximum illumination as well as thorough mixing of heated ceiling air with cooler floor air to prevent stratiflcation are desirable, said member I89 could easily be moved to a position, on the tube I84, inproximity to the ceiling. Should subdued indirect lighting be required, said member I 89 could be made of a cobalt blue tinted material without aiIecting its hot weather air deflecting features. 'Said member I89 would be circular in shape in most instances The main supporting cross member I94 has the wire concealing flanged members I85 and I96 attached to it by any suitable means. The hollow members I91 and I98 in which are mounted the auxiliaries I99 and 288 for operating the but it could be of any shape suitable for obtaining the best results.

fluorescent lamps 28I and 285, more clearly seen in Figure 14, are rigidly attached to the cross member I94 by means of the screws 283. and the nuts 284. The sockets 282, in which the tubes 28I and 285 are quick detachably mounted; are

also fitted to the hollow members I91 and 198 as required.

The open ended member 286, which is preierably of metal having a high reflecting surface 281, but which may be-madeof a light transmitting material, is detachably mounted to the cross member I94 with the screws 2I I. The secondary co-operating member 288, which, with the main member 286, serve to enclose and conceal 'member 286 to permit an adequate intake of air to insure eflicient operation ofthe device should it be necessary to restrict the area or the principal opening 2I6 in providing proper illumination.

The wires 2I2 of the motor I16, the wires 2l3 of the sockets I86 and the wires 2I4 from the fluorescent lamps 28I and 285, and the auxiliaries I99 and 288, enter the tube I84 asshown, and emerge as the main lead wires 2I5. These .wires, as already described for similar units or Figures 11 and 12, run to and are connected with suitable switches and controls, preferably located away from the'assembled unit.

Figure 14 more clearly shows the preferred manner of forming the member 288 to accommodate the two hollow members I91 and I98 without interfering with the quick detachable feature of said member 288. This flgure also shows the relative position of the lighting means to the light transmitting air impelling means I12, the main reflector 288 and the co-operating reflector 288. As will be seen, the auxiliaries I99 and 288, necessary to properly operate the fluorescent lamps 28I and 285 on ordinary electrical wiring and currents, are the same as described for Figures 11 and 12. In many instances in practice the lamps 28I and 286-, or their equivalent, may be dispensed with, it desired.

Referring to Figures 15 and 16, 228 is an air impeller directly attached to the rotor 22I, of the motor 222, by any suitable means such as the screws 223. The light transmitting air impelling blades 224, which are detachably mounted on the impeller arms 225, perform the same functions already described for the air impelling means of Figures 1, 6, 11 and 13. The rotor sleeve 226, which is preferably permanently lubricated, rides on the ball bearings 22! around the vertically disposed hollow member 228. The hollow member 228 is accurately seated on the motor housing 229 and acts to conceal and protect the wires 23!] that run to the socket 23L which supports the lamp 232.

The light transmitting member 233, in which the lamp 232 is preferably concealed, may be dispensed with if desired. The annular memher 234, which supports the light transmitting member 233, is rigidly attached to the housing 235 that surrounds the bearings 221, and serves to hold bearing lubricant. The adjustable screws 236 act to hold the light transmitting member 233 in rigid assembly on the annular member 234. The motor wires 23! join the lighting wires 2% to emerge from the main Supporting tubular member 238 as the lead wires 239. As already explained for Figures 11 and 13,. the motor and lighting wires 23! and 230, run to and are connected with suitable switches and controls, preferably located away from the assembled unit. The procedure to be followed in wiring a device of this character is well known to those skilled in the art and a detailed explanation is therefore unnecessary. The reinforcing ribs 260 and 2M perform the same function as already described for similar elements seen in Figures 5, and 12, and may or may not be used as desired.

Figure 16, more clearly shows the relation of the light transmitting air impelling blades 224 iii) to the lamp 232. While I prefer to show only eight air impelling blades, it is to be understood that I am not to be limited to any specific number of blades or form of same, and I may even use air impellers employing a multiplicity of closely spaced blades, or an integral type of impeller.

In view of the increasing use by illuminating engineers oi ceilings having emcient reflecting surfaces to obtain good indirect lighting, the light transmitting member 233, which I have preferred to show as a closed globe, may be constructed in many instances to have its inside bottom surface adjacent the lamp 232 of high reflecting qualitiesgwith its top section, adjacent the air impelling blades 22%, transparent. The member 233 may also be in the form of a cup without a top section and opaque to obtain maximum reiiection of the light rays towards the ceiling through the light transmitting air impelling blades 2%.

In all embodiments of my invention the lighting means and the air impelling means may be independently controlled in any suitable manner to provide efficient illumination or air flow separately as well as simultaneously, as desired.

In all embodiments of my invention the air impelling means is co-related with the lighting means in such a manner that light rays from the lighting means may pass through the air impeller or impellers of the air impelling means.

While I have shown certain preferred types of air impellers having light transmitting air immlling blades, it is to be understood that any suitable light transmitting air impelling means may be used without departing from the scope of the invention. 1 therefore desire to have the term air impeller broadly construed as covering any revolvable element which will cause or create a flow of air. I

It is also to be understood that while I have preferred to show certain types of lighting means, any suitable type may be'used that will provide satisfactory illumination.

In so far as I am aware, I am the first in the art to use an air impeller having light transmitting air impelling blades in the path of light rays issuing from lighting means, whereby light rays will pass through the air impelling blades, and I, therefore, desire to have my claims to these features receive the broad and generic interpretation to which a pioneer in the art is entitled.

Having thus described my invention what I claim as new and desire to secure by Letters Patent is: v

1. In a lighting and air impelling device, an electric light, an electric motor, supporting means for said light and motor, and an air impeller driven by said motor and having light transmittric light and in the path of light rays issuing from said electric light to thereby provide for illumination at all times through the air impelling blades and to prevent flicker during rotation of said air impeller.

2. In a lighting and air impelling device, an electric light, an electric motor, supporting means for said light and motor, an air impeller driven by said motor and having light transmitting air impelling blades adjacent to said electric light and in the path of light raysissuing from said electric light to thereby provide for illumination at all times through the air impelling blades and to prevent flicker during-rotation of said air impeller, and a light transmitting member between said electric light and air impeller.

3. In a lighting and air impelling device, an electric'light, an electric motor, supporting means for said light and motor, an air impeller driven by said motor and having light transmitting air impelling blades adjacent to said electric light and in the path of light rays issuing from said electric light to thereby provide for illumination at all times through the air impelling blades and to prevent flicker during rotation of said air impeller, and a light transmitting member between said electric light and air impeller and having openings to permit air to pass around said light.

4. In a lighting and air impelling device, an electric light, an electric motor, supporting means for said light and motor, an air impeller driven by said motor and having light transmitting air impelling blades adjacent to said electric light and in the path of light rays issuing from said electric light to therebyprovide for illumination at all times through the air impelling blades. and to prevent flicker during rotation of said air impeller, and a light transmitting open ended member between said electric light and air impeller.

5. In a lighting and air impellingdevice, an electric light, an electric motor, supporting means for said light and motor, an air impeller driven by said motor and having light transmitting air impelling blades adjacent to said electric light and in the path of light rays issuing from said electric light to thereby provide for illumination at all times through the air impelling blades and to prevent flicker during rotation of said air impeller, and an insulating member between said electric light and air impeller.

.ting air impelling blades adjacent to said elecc. In a lighting and air'impelling device, an

' so arranged as to provide for electric? an electric .motor, supporting means for said light and motor,air impeller driven by said I motorzand having light transmit-- ting air impelling blades: adjacentxto said elec-,

- tric light and in the .pathof light rays issuing trom said electric light to thereby provide for illumination: at all times"- through the "air impelling blades'and to prevent flicker during rotation of saidairimpeller, and areflector between by'said motor-and having light transmittingyair impelling blades adjacent to said electric light and in thepath of light rays issuing from said electric light to thereby provide for illumination at all times, through the air impelling blades and to prevent flicker during rotation of said air impeller, and an open ended member surrounding the air impeller to determine the path of the flowofair;

8. In a lighting and air impelling device, an electric light, an electric motor, supporting means for said light and motor, an air impeller driven by said motor and having light transmitting air impelling blades adjacent to said electric light and in the path of light rays issuing from said electric light to thereby provide for illumination at all times through the air impelling blades pelling blades and to prevent flicker during rotation of said air impeller, and an open ended member surrounding said electric light and air impeller and having itstinner face provided with light reflecting qualities.

10. In a lighting and air impelling. device, an electric light, an electric motor,,supporting means for said light and motor, an air impeller driven by said motor and having light transmitting air impelling blades adjacent to said electric light and in the path of light rays issuing from said electric light to thereby provide for illumination at all times through the air impelling blades and to prevent flicker during rotation of said air impeller, and an open ended light transmitting reflector-diffuser surrounding said electric light and air impeller.

11. In a lighting and air impelling electric light, an electric motor, supporting means for said light and motor, an air impeller driven by said motor and having light transmitting air impelling blades adjacent to said electric light and in the path oi light rays issuing from said electric light to thereby provide for illumination at all times through, the air impelling blades and to prevent flicker during rotation of said air impeller, and an open ended segmental member surrounding said electric light and air impeller and passage of air between segments.

12. .In a lighting and air impelling device, an electric light, an electric motor, supporting means for saidlight and motor, an air impeller device, an

tric light and in the path of 'light rays-issuing .from said electrlclightto thereby provide ior illumination at iall times through the air. impelling bladesand to prevent flicker :during :rotationot said air impeller, and spaced elements in proximity -to saidmir impeller to divide the air flow created by said==.impeller; 1 I l 13. In a lighting and air impelling device, two types; of electric lights, oneof' which is,=of:the fluorescent type an electric motor, supporting means forsaid lights and motor, and an air impeller driven by said motor and having light transmitting air impelling blades adjacent tosaid electric lights and in the path of light raysissuing from said electric lights to thereby provide for illumination at all times'through the air impelling blades and to prevent flicker during rotation of said air impeller. I

14. In a lighting and air impelling device, a plurality oftelectric :lights, anzelectrlc motor, supporting means for said lights and motor, and an air impeller driven by said motor, said lights being located on opposite sides of said air impeller with said impeller having light transmitting air impelling blades adjacent to said electric lights and in the path of light rays issuing from said electric lights to thereby provide for illumination at all times through the air impelling blades and to prevent flicker during rotation of said air impeller.

15. In a lighting and air impelling device, an

electric light, an electric motor, supporting means for said light and motor, an air impeller driven by said motor and having light transmitting air impelling blades adjacent to said electric light and in the path of light rays issuing from said electric light to thereby provide for illumination at all times through the, air impelling blades and to prevent flicker during rotation of said air impeller, and a combined air deflecting and light reflecting member mounted in proximityto said electric light and air impeller.

16. In a lighting and air impelling device, an electric light, an electric motor, supportingmeans for said light and motor, and an air impeller driven by said motor and having light transmitting air impelling plastic blades adjacent to said electric light and in the path of light rays issuing from said electric light to thereby provide for illumination at all times through said blades and to prevent flicker during rotation of said impeller. r

17. In a lighting and air impelling device, a fluorescent light, an electric motor, supporting means for said light and motor, and an air impeller driven by said motor and having light transmitting air impelling blades adjacent to said fluorescent light and in the. path of light rays issuing from said light to thereby provide for illumination at all times through the .air

impelling blades and to prevent flicker during rotation of said air impeller. a

18. In a lighting and air impelling device, a fluorescent light, an electric motor, supporting means for said light and motor, and an air impeller driven by said motor, said flourescent light being disposed on one side of said air impeller,

drivenby said motor and having light transmit-- ting air impelling blades adjacent-to-said :elec-i with said impeller having light transmitting air light to thereby provide for illumination at all times through the air impelling blades and to 76 said electric lights and in the path of light rays issuing from. said electric lights tothereby pro vide for illumination at all times through-the air impelling blades and to prevent flicker during rotation of said air impeller.

20. In alighting and air impelling device, an electric light, 'an electric motor, supporting means for said light and motor, an air impeller driven by said motor and having light transmitting air impelling blades adjacent to said electric light and in the' path of light rays issuing from said electric light to thereby provide for illumination at all times through the air impelling blades and to prevent flicker during rotation of said air impeller, and alight transmit-= ting member adjacent to said electric light and air impeller and in the path of light rays issuing from said electric light.

- WILLIAM A. BROWN. 

